Have You Seen These Paintings? $10 Million Reward Offered For Artwork Stolen in 1990

A hot tip in 27-year-old art heist case could earn you a whopping $10 million reward — but you've only got three days.

In 1990, thieves made off with some of the world's most precious paintings from the Isabella Stewart Gardner Museum in Boston. The works have never been recovered.

“This is an enormous reward from a private institution. It speaks volumes on how committed we are to getting this art back,” Anthony Amore, the director of security at the museum, told Inside Edition.

In the early hours of March 18, 1990, two men disguised as police officers approached the back entrance of the museum, bound and gagged a security guard with duct tape, and shoved him in the basement. They then spent an hour and a half ripping priceless artwork from the walls.

They stole works by Rembrandt, Degas, Manet and "The Concert" by Vermeer, which is valued at $300 million and considered the most expensive piece of stolen property in the world.

“It is just a gigantic loss from any collection,” Amore said. “Combine that with everything else that was stolen that night, [it is] staggering.”

With help from the FBI, the museum has been scouring the globe for the missing art, even using huge billboards to appeal for clues.

Earlier this year the reward was doubled from $5 million to $10 million but time is running out to claim the money. The deadline is midnight on New Year’s Eve.

“We are desperate,” Amore said. “We want to create a sense of urgency."

Even the thieves can collect the reward as the five-year statute of limitations has run out so they can't be convicted.

Authorities haven't offered blank immunity for whoever currently has the paintings but they say they are willing to consider it for anyone who can help them recover the stolen art.